BudsGunShop.com - ‘Super suppressed’…like ‘super pregnant’?

I believe its just a marketing name like the Winchester "Super X"
This is their description of the round....
Features:
Noise Reduction: The rifle round pushes velocities below the speed of sound, resulting in lower decibel levels. This reduction in noise is essential for maintaining stealth and minimizing disturbance.
Decreased Fouling: The copper jacket encloses the base of the bullet core, reducing lead fouling in barrels and suppressors. This feature helps keep your firearm cleaner during extended shooting sessions.
Recoil Mitigation: The Super Suppressed line is engineered to minimize recoil, allowing for more comfortable shooting experiences.

All "normal" 45 apc is sub sonic. Just the name.

A little parachute comes out of the back to slow it down. Also, Winchester gives a muzzle velocity of right at the standard ~850fps. I believe their main Super claim beyond marketing is that they used fully encapsulated bullets to be slightly cleaner than regular FMJ's exposed lead base.

Hi Steve and welcome. No Really, they 40 fps slower and just optimized for lower recoil and noise signature over standard loads. Details here : https://winchester.com/Products/Ammunition/Handgun/Super-Suppressed/SUP45